Zircon U-Pb Geochronology Links the End-Triassic Extinction with the Central Atlantic Magmatic Province

@article{Blackburn2013ZirconUG,
  title={Zircon U-Pb Geochronology Links the End-Triassic Extinction with the Central Atlantic Magmatic Province},
  author={T. Blackburn and P. Olsen and S. Bowring and N. McLean and D. Kent and J. Puffer and G. McHone and E. Rasbury and M. Et-Touhami},
  journal={Science},
  year={2013},
  volume={340},
  pages={941 - 945}
}
Life Versus the Volcanoes Correlating a specific triggering event, such as an asteroid impact or massive volcanism, to mass extinction events is clouded by the difficulty in precisely timing their occurrence in the geologic record. Based on rock samples collected in North America and Morocco, Blackburn et al. (p. 941, published online 21 March) acquired accurate ages for events surrounding the mass extinction that occurred ∼201 million years ago, between the Triassic and Jurassic Periods. The… Expand
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TLDR
Hg isotopes display no significant mass independent fractionation within the extinction and depauperate intervals, consistent with a volcanic origin for the Hg, and indicate that significant biotic recovery did not begin until CAMP eruptions ceased. Expand
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